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A knowledge based expert system to aid theoretical ultrasonic flaw modelling

Robinson, R.J. and McNab, A. (2005) A knowledge based expert system to aid theoretical ultrasonic flaw modelling. In: 31st Annual Review of Progress in Quantitative Nondestructive Evaluation, 2004-07-25 - 2004-07-30.

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Abstract

This paper describes the culmination of three years work at the University of Strathcylyde in developing an Expert System to aid theoretical flaw, modelling. The Expert System utilises four validated models to Simulate flaw modelling scenarios. Under certain conditions the models may break down and produce flaw, responses which cannot be considered accurate. Previously a suitably qualified NDT engineer would have to interpret these results and update the original flaw model simulation in order to produce valid results. This was a laborious process and was restricted to those persons who had an in-depth knowledge in the operation of the validated models. The Expert System is capable of interpreting these warning flags and updating the original simulation to produce a valid modelling scenario. This paper gives a brief outline of how the Expert System operates before comparing the response of the system to that of a Suitable qualified NDT engineer for a number of defect scenarios.